- Aug 14, 2009
- Reaction score
It's a great demo rocket, due to large size. And the D12-3 motor is also perfect for demo flights, because the ejection and deployment happen close enough to the ground that you actually get to see it. (And the E9 and E12 motors run a greater risk of Cato, which is not ideal for demos!)I will probably use it as a demo for my classes during the school year. Will have to use D12-3's due to field size. I reinforced the fin attachments with epoxy and added a stronger (and longer) shock cord. Thanks for the kind words!
If you've never flown your MAIII on anything larger than a D12-3, and you have access to a large enough field, you might want to give it a shot.Thought I might chime in here because I have plenty of experience with MAIII. I have four of them. Two of them are assembled and flying. One is a brand new spare. The fourth is an old school kit I bought on eBay that I may build someday.
I have never flown MAIII with anything larger than a D12-5 but it always flies well. Stable and steady. However I agree about the fin tabs breaking so when ever I work on MAIII (and Red Flare) I always add glue to the lower fin tabs. They are a weak point.
I have had no issues with shock cords or parachutes.
Barbarian,If you've never flown your MAIII on anything larger than a D12-3, and you have access to a large enough field, you might want to give it a shot.
Estes E9 is a slow, majestic takeoff and longer burn --- very nice flight, but you want to have a long rod (around 6'), and no wind, because the rocket can weather cock into a breeze and head down range like a cruise missile. Some would say the motor is under-powered for that rocket, and if it's built heavy like mine, that's probably true, but under the right conditions, it's a nice flight.
Estes E12 has a stronger takeoff and straighter flight than the E9. Those two motors have almost the same impulse, but different thrust. So they go to almost exactly the same altitude, just at different speeds.
I've never had a Cato with an E9 or an E12, but I've seen a lot of them at club launches, and some people worry about it. An Aerotech single use E20 is a pretty awesome alternative. The MAIII really takes off with authority on that one, and it goes much higher that it does on the Estes motors.
If your field is small, stick with the D12, but if conditions allow it, you might want to try some of the other motors.